The boat Tequesta teens Austin Stephanos and Perry Cohen were in when they disappeared is also missing.
TowBoatUS says the Florida Fish and Wildlife Conservation Commission contacted it to retrieve the vessel which capsized about 67 nautical miles east of the Ponce De Leon Inlet.
But the company says it's not in the area where the Coast Guard last spotted it.
The Coast Guard does not normally tow boats to shore. After a diver determined no one was on board the Coast Guard marked the location and kept searching.